Mentalists and Magicians - are you looking for the perfect routine using a combination lock number? Your search is over!

With Ring of Destiny, a married couple's wedding rings are locked onto a combination padlock. It is suggested that, if they are truly meant to be together, then fate and destiny will look after them regardless of obstacles they may encounter during their lifetimes.

You hand out a small notepad to the audience. Four volunteers each write down a random four-digit number. These are then added together to create a unique five-digit number.

Whilst this is taking place, four other audience members randomly generate numbers of their own in the most free and honest-seeming manner you will ever encounter. These numbers are then used to count down to the corresponding position in a deck of cards that was seen to be shuffled at the start of the routine.

The 5-digit notepad number is revealed and is, for example, 15769.

You explain that, as only four cards had been randomly selected, you will use just the first four digits of 1576.

To everyone's amazement, when the four playing cards are turned over, they are an Ace (one), five, seven and six, matching the first four digits of the randomly calculated number perfectly.

This four-digit number of 1567 is then entered into the combination lock -- the lock opens! The married couple gets their rings back, and the audience goes mad with thunderous applause.

Also explained is a bonus element. Here, you prove that subliminal programming was used to influence everyone to choose the numbers that they ultimately selected (which also proves that you influenced the entire five-digit notepad total). This produces even more massive applause.

The important points to remember are:

• The padlock is 100% ungimmicked
• You could give the padlock away at the end
• All number selections seem completely random
• The methods used have fooled even experienced performers!
• Routine involves lots of audience members
• There are several strong inbuilt applause cues
• This packs extremely small and plays massive